US2673818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lubricating a metal surface
Assignee: Compagnie Francaise de Raffinage SA
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Filing: 1951-02-27
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Granted: 1954-03-30
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Expires: 1971-02-27
Abstract
No abstract record available.
Inventors
- 👤 Woog Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
C; C10; C10M; C10M5/00; C10M7/00; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2040/00; C10N2040/02; C10N2040/06; C10N2050/00; C10N2050/10; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD OF LUBRICATING A METAL SURFACE WHICH COMPRISES APPLYING TO SAID SURFACE BY DRY RUBBING, A CONTINUOUS, EXTREMELY THIN, DRY LAYER OF A METAL STEARATE SELECTED FROM THE GROUP CONSISTING OF BARIUM, LEAD AND ZINC STEARATES, AND THEREAFTER APPLYING A LUBRICATING OIL TO SAID METAL STEARATE LAYER.
Claim 2
Independent Claim
48 words
A METHOD OF LUBRICATING A METAL SURFACE WHICH COMPRISES APPLYING TO SAID SURFACE BY DRY RUBBING, A CONTINUOUS, EXTREMELY THIN, DRY LAYER OF A METAL STEARATE SELECTED FROM THE GROUP CONSISTING OF BARIUM, LEAD AND ZINC STEARATES, AND THEREAFTER APPLYING A LUBRICATING OIL TO SAID METAL STEARATE LAYER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |